EP 0096132 A1 19831221 - Injection molding method and apparatus.
Title (en)
Injection molding method and apparatus.
Title (de)
Spritzgiessverfahren und -vorrichtung.
Title (fr)
Procédé et dispositif de moulage par injection.
Publication
Application
Priority
- JP 7717982 A 19820509
- JP 7718082 A 19820509
- JP 8068982 U 19820602
Abstract (en)
[origin: US4797236A] A method for injection molding a material involving bringing the interior of a tightly sealed injection mold under a high vacuum, then injecting the material into the interior of the injection mold at an ultrahigh speed in the vicinity of a speed at which adiabatic change is exerted on the material in accordance with a predetermined pattern of internal pressure so as to fill the interior of the injection mold with the material, and molding the material under low pressure. An injection molding apparatus used for carrying out the aforementioned method is capable of bringing the interior of the injection mold to a high vacuum.
IPC 1-7
IPC 8 full level
B29C 45/00 (2006.01); B29C 45/34 (2006.01)
CPC (source: EP US)
B29C 45/00 (2013.01 - EP US); B29C 45/34 (2013.01 - EP US)
Citation (search report)
- [A] DE 2200314 B2 19760219
- [A] GB 1253539 A 19711117 - WELLMAN ENGINEERING CORP LTD [GB]
- [A] GB 1003797 A 19650908 - MANFRED MATTHIAS DUNKEL
- [A] GB 2030916 A 19800416 - DANIELS STROUD LTD
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
EP 0096132 A1 19831221; EP 0096132 B1 19890111; DE 3279339 D1 19890216; US 4797236 A 19890110
DOCDB simple family (application)
EP 82305715 A 19821027; DE 3279339 T 19821027; US 81089285 A 19851218